*{ margin:0px; padding:0px;}
body{ font-family:Verdana, Geneva, sans-serif; font-size:14px;}
#nav{ width:600px; height:40px; background-color:#033f56; margin:0 auto;}
ul{ list-style:none;}
ul li{ float:left; line-height:40px; text-align:center; width:100px;margin-top: 10px;}
a{ text-decoration:none; color:#000; display:block;}
a:hover{ color:#F00; background-color:#033f56;}
ul li ul li{ float:none;background-color:#033f56; margin:2px 0px;}
ul li ul{ display:none;}